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1994.5 - 1997 7.3L Power Stroke Diesel  

Connector smoking, melted

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Old May 8, 2007 | 08:35 PM
  #1  
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grimace71
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Connector smoking, melted

The two connectors on the back of the valve covers were smoking today,I think they are for the injectors and glow plugs? There are 5 wires in the connectors. The wires on each connector towards the front are the ones that are melted and smoking. I cant seem to find what these wires are for. Does anyone know what the wires are and a possible cause of my problem?
 
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Old May 8, 2007 | 11:10 PM
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From: boston ma (the bean)
the wires are for the glow plugs and the injectors i dont know why they are smoking but someone here will
 
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Old May 8, 2007 | 11:54 PM
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common problem seen around here for those wiring harnesses to fail, if you pull the valve cover you will probably find the wires fried
 
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Old May 9, 2007 | 04:24 PM
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The load of your glow plugs are too much for the connector size. It's just a flaw in our trucks. You can buy replacement connectors, pins, and tool to replace them from ford for about 30 bucks. I just did it on a truck I'm selling. But you should also look at your valve cover gaskets. If they are fried too, you need to pull the valve covers and check the health of the connectors under the cover. If it get's bad enough, it will fry the IDM. Hope that helps.
 
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Old May 9, 2007 | 07:32 PM
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Thanks for the advice. Is there an upgraded connector/harness,or any alteration that can eliminate this problem? I wouldnt like to do it more than once especially since its in a van.
 
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Old May 9, 2007 | 10:21 PM
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A van.........ouch. Unfortunately, I don't know of any. that's not to say they are not out there. But I don't think so. Because you would have to alter the under valve cover harness and gasket. On the bright side, at least it's a cheap fix.
 
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Old May 9, 2007 | 10:37 PM
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I did a lot of searching and think I am going to put a momentary switch on the wires to the glow plug relay,this way they arent used for warm starts and arent on for too long. How would I know if the idm is bad?I unplugged one connector and the van died.I pulled the other connector and it kept running.
 
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Old May 9, 2007 | 11:11 PM
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Most likely if the truck is running fine it's okay. I ran into this problem with my flip truck. I replaced all the connectors and burnt pins. The truck would start, but wouldn't go over 1500 rpm. And it clattered REALLY loud and ran rough. Kinda like injectors weren't firing. I was lucky enough to have a friend that had a spare I could try. And once I pulled the fried one out, you could litterally smell how burnt up it was at the connector.
 
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Old May 12, 2007 | 02:49 PM
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I bought 2 connectors for $20.00 each at the dealer and spliced them into the 2 rear connectors.Holy @#$%.! What a difference.Before this I noticed the van ran so rough the antenna would shake, I just figured thats how a diesel runs. Now the antenna is steady and the van almost runs as smooth as a gasser. Also on a run that I calculate fuel mileage weekly I measured a fuel mileage increase of 2 mpg ( from 19.5 mpg upto 21.5mpg) saving me $5, and that was driving it harder than all of my previous runs.I know I'll be up to at least 22 mpg.Its just hard to resist the new found power. 0-60 went from 12.06 down to 9.75 seconds measured on my edge evolution set on the lowest setting (tow).I'm scared to see what it will do on extreme setting,but I'll probably check that out real soon just for gits and shiggles.
 
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Old May 12, 2007 | 08:38 PM
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Glad you got it fixed brother. Good job.
 
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